negative ions will combine with pollutants in the air and can effectively remove particles as small as 0.01 microns from the air Item NO:HG201 Coverage: 5m2Voltage/power: AC100-250V/50-60Hz/<1.0WAnion density: >3.0*106pcs/cm3ozone density: <0.05ppmLife: >8000HNet/Gross Weight(g): 59/84Product size(mm):56*103packing size(mm): 60*60*118Carton size(cm): 62*32*25.8 (100pcs/CTN) MOQ: 2000PCS supply ...